Not wanting to steal Digeridoo's excellent thread I figured I'd start another. We can Just post pictures of aquatic bugs with basic area info & leave the bug I.D. & what fly pattern you would use to "match the Bug"up to other posters.
All these photos were of bugs collected in late March at the tail end of a pool in about 1' of water 0-20 ft from shore

-Mayfly nymph 1,2 can't help with positive ID though.
-Various Caddis larvae 3,5,7,8 and one caddis pupae 4.
-Golden Stonefly nymph 3,6. Hard to tell if they're the same species and just different ages!?